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211 lines
7.3 KiB
Lua
211 lines
7.3 KiB
Lua
local t = require('test.unit.testutil')
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local itp = t.gen_itp(it)
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local uv = vim.uv
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local child_call_once = t.child_call_once
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local sleep = uv.sleep
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local ffi = t.ffi
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local cimport = t.cimport
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local to_cstr = t.to_cstr
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local neq = t.neq
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local eq = t.eq
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local mkdir = t.mkdir
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local options = cimport('./src/nvim/option_vars.h')
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local undo = cimport('./src/nvim/undo.h')
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local buffer = cimport('./src/nvim/buffer.h')
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local old_p_udir = nil
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-- Values expected by tests. Set in the setup function and destroyed in teardown
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local file_buffer = nil
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local buffer_hash = nil
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child_call_once(function()
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if old_p_udir == nil then
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old_p_udir = options.p_udir -- save the old value of p_udir (undodir)
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end
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-- create a new buffer
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local c_file = to_cstr('Xtest-unit-undo')
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file_buffer = buffer.buflist_new(c_file, c_file, 1, buffer.BLN_LISTED)
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file_buffer.b_u_numhead = 1 -- Pretend that the buffer has been changed
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-- TODO(christopher.waldon.dev@gmail.com): replace the 32 with UNDO_HASH_SIZE
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-- requires refactor of UNDO_HASH_SIZE into constant/enum for ffi
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--
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-- compute a hash for this undofile
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buffer_hash = ffi.new('char[32]')
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undo.u_compute_hash(file_buffer, buffer_hash)
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end)
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describe('u_write_undo', function()
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setup(function()
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mkdir('unit-test-directory')
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uv.chdir('unit-test-directory')
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options.p_udir = to_cstr(uv.cwd()) -- set p_udir to be the test dir
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end)
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teardown(function()
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uv.chdir('..')
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local success, err = uv.fs_rmdir('unit-test-directory')
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if not success then
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print(err) -- inform tester if directory fails to delete
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end
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options.p_udir = old_p_udir --restore old p_udir
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end)
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-- Lua wrapper for u_write_undo
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local function u_write_undo(name, forceit, buf, buf_hash)
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if name ~= nil then
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name = to_cstr(name)
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end
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return undo.u_write_undo(name, forceit, buf, buf_hash)
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end
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itp('writes an undo file to undodir given a buffer and hash', function()
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u_write_undo(nil, false, file_buffer, buffer_hash)
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local correct_name = ffi.string(undo.u_get_undo_file_name(file_buffer.b_ffname, false))
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local undo_file = io.open(correct_name, 'r')
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neq(undo_file, nil)
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local success, err = os.remove(correct_name) -- delete the file now that we're done with it.
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if not success then
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print(err) -- inform tester if undofile fails to delete
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end
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end)
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itp('writes a correctly-named undo file to undodir given a name, buffer, and hash', function()
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local correct_name = 'undofile.test'
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u_write_undo(correct_name, false, file_buffer, buffer_hash)
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local undo_file = io.open(correct_name, 'r')
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neq(undo_file, nil)
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local success, err = os.remove(correct_name) -- delete the file now that we're done with it.
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if not success then
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print(err) -- inform tester if undofile fails to delete
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end
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end)
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itp('does not write an undofile when the buffer has no valid undofile name', function()
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-- TODO(christopher.waldon.dev@gmail.com): Figure out how to test this.
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-- it's hard because u_get_undo_file_name() would need to return null
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end)
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itp('writes the undofile with the same permissions as the original file', function()
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-- Create Test file and set permissions
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local test_file_name = './test.file'
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local test_permission_file = io.open(test_file_name, 'w')
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test_permission_file:write('testing permissions')
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test_permission_file:close()
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local test_permissions = uv.fs_stat(test_file_name).mode
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-- Create vim buffer
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local c_file = to_cstr(test_file_name)
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file_buffer = buffer.buflist_new(c_file, c_file, 1, buffer.BLN_LISTED)
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file_buffer.b_u_numhead = 1 -- Pretend that the buffer has been changed
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u_write_undo(nil, false, file_buffer, buffer_hash)
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-- Find out the correct name of the undofile
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local undo_file_name = ffi.string(undo.u_get_undo_file_name(file_buffer.b_ffname, false))
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-- Find out the permissions of the new file
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local permissions = uv.fs_stat(undo_file_name).mode
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eq(test_permissions, permissions)
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-- delete the file now that we're done with it.
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local success, err = os.remove(test_file_name)
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if not success then
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print(err) -- inform tester if undofile fails to delete
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end
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success, err = os.remove(undo_file_name)
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if not success then
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print(err) -- inform tester if undofile fails to delete
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end
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end)
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itp('writes an undofile only readable by the user if the buffer is unnamed', function()
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local correct_permissions = 33152
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local undo_file_name = 'test.undo'
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-- Create vim buffer
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file_buffer = buffer.buflist_new(nil, nil, 1, buffer.BLN_LISTED)
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file_buffer.b_u_numhead = 1 -- Pretend that the buffer has been changed
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u_write_undo(undo_file_name, false, file_buffer, buffer_hash)
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-- Find out the permissions of the new file
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local permissions = uv.fs_stat(undo_file_name).mode
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eq(correct_permissions, permissions)
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-- delete the file now that we're done with it.
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local success, err = os.remove(undo_file_name)
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if not success then
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print(err) -- inform tester if undofile fails to delete
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end
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end)
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itp('forces writing undo file for :wundo! command', function()
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local file_contents = 'testing permissions'
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-- Write a text file where the undofile should go
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local correct_name = ffi.string(undo.u_get_undo_file_name(file_buffer.b_ffname, false))
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t.write_file(correct_name, file_contents, true, false)
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-- Call with `forceit`.
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u_write_undo(correct_name, true, file_buffer, buffer_hash)
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local undo_file_contents = t.read_file(correct_name)
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neq(file_contents, undo_file_contents)
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local success, deletion_err = os.remove(correct_name) -- delete the file now that we're done with it.
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if not success then
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print(deletion_err) -- inform tester if undofile fails to delete
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end
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end)
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itp('overwrites an existing undo file', function()
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u_write_undo(nil, false, file_buffer, buffer_hash)
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local correct_name = ffi.string(undo.u_get_undo_file_name(file_buffer.b_ffname, false))
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local file_last_modified = uv.fs_stat(correct_name).mtime.sec
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sleep(1000) -- Ensure difference in timestamps.
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file_buffer.b_u_numhead = 1 -- Mark it as if there are changes
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u_write_undo(nil, false, file_buffer, buffer_hash)
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local file_last_modified_2 = uv.fs_stat(correct_name).mtime.sec
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-- print(file_last_modified, file_last_modified_2)
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neq(file_last_modified, file_last_modified_2)
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local success, err = os.remove(correct_name) -- delete the file now that we're done with it.
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if not success then
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print(err) -- inform tester if undofile fails to delete
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end
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end)
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itp('does not overwrite an existing file that is not an undo file', function()
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-- TODO: write test
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end)
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itp('does not overwrite an existing file that has the wrong permissions', function()
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-- TODO: write test
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end)
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itp('does not write an undo file if there is no undo information for the buffer', function()
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file_buffer.b_u_numhead = 0 -- Mark it as if there is no undo information
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local correct_name = ffi.string(undo.u_get_undo_file_name(file_buffer.b_ffname, false))
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local existing_file = io.open(correct_name, 'r')
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if existing_file then
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existing_file:close()
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os.remove(correct_name)
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end
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u_write_undo(nil, false, file_buffer, buffer_hash)
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local undo_file = io.open(correct_name, 'r')
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eq(undo_file, nil)
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end)
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end)
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